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use json::{JsonValue};
use rust_xlsxwriter::{Format, Workbook, Worksheet, FormatAlign};
use crate::Head;

pub struct Excel {
    filepath: String,
    page: usize,
    excel: Workbook,
}

impl Excel {
    pub fn new(filepath: &str) -> Self {
        Self {
            filepath: filepath.to_string(),
            page: 0,
            excel: Workbook::new(),
        }
    }
    pub fn set_page(&mut self, page: usize, nane: &str, heads: Vec<Head>, data: JsonValue) -> &mut Self {
        self.page = page;
        let mut worksheet = Worksheet::new();
        worksheet.set_name(nane).unwrap();

        let format1 = Format::new().set_align(FormatAlign::Center);
        let mut line = 0;
        let mut col = 0;
        for head in heads.clone() {
            worksheet.set_column_width(col, head.width).unwrap();
            worksheet.write_string_with_format(line, col, &*head.title, &format1.clone()).unwrap();
            col += 1;
        }
        line += 1;
        for row in data.members() {
            col = 0;
            for head in heads.clone() {
                if row[head.field.clone()].is_empty() {
                    col += 1;
                    continue;
                }
                worksheet.write_string_with_format(line, col, &*row[head.field].to_string(), &format1).unwrap();
                col += 1;
            }
            line += 1;
        }
        self.excel.push_worksheet(worksheet);
        self
    }

    pub fn save(&mut self) {
        self.excel.save(self.filepath.clone()).unwrap();
    }
}